Background Hypertension is one of the chronic diseases with the highest prevalence in China, and a history of hypertension may potentially exacerbate hearing loss. Investigating the association between long-term blood pressure trends and hearing thresholds could contribute to hearing protection efforts for occupationally noise-exposed populations. Objective By investigating hearing thresholds and blood pressure levels among occupationally noise-exposed workers in an urban rail transit enterprise, and conducting a comprehensive analysis of the association between long-term blood pressure changes and hearing thresholds, to provide data references for health management strategies targeting occupationally noise-exposed workers. Methods Workers exposed to occupational noise at a rail transit enterprise were enrolled as study subjects and underwent pure-tone audiometry. Group-based trajectory modeling was employed to identify blood pressure trajectories. Categorical data were compared using chi-square tests, while normally distributed continuous variables were analyzed via t-tests and analysis of variance (ANOVA). Generalized linear mixed models (GLMMs) were subsequently applied toexamine associations between these trajectory groups and high-frequency hearing thresholds. Results Among 2 002 occupationally noise-exposed workers, the median (P₂₅, P₇₅) age was 32 (28, 35) years, with a median (P₂₅, P₇₅) working tenure of 7 (3, 10) years. In 2019, the positive hypertension rate was 9.04%, with a mean systolic blood pressure (SBP) of (122.97±11.60) mmHg and a mean diastolic blood pressure (DBP) of (76.37±9.02) mmHg. The hearing loss prevalence was 10.1%, showing bilateral high-frequency average hearing thresholds of (17.18±8.71) dB and speech-frequency average thresholds of (13.79±3.46) dB. Three distinct trajectory groups were identified for both SBP and DBP. Compared with other trajectory groups, the high-stable DBP group exhibited significantly higher hearing loss prevalence (χ²=6.34, P=0.042) and elevated high-frequency hearing thresholds (all Ps<0.05). Specifically, within the 30-39 age subgroup, the moderate-stable DBP group demonstrated 1.96 dB lower high-frequency thresholds than the high-stable group [β(95%CI): −1.96 (−3.61, −0.32), P=0.020]. Conclusion Among occupationally noise-exposed workers in a municipal rail transit enterprise, DBP trajectories demonstrated a positive association with high-frequency hearing thresholds. Notably, in young and middle-aged occupationally noise-exposed populations, DBP may exert a more critical influence than SBP on the progression of hearing loss.

OBJECTIVE To study the effect of 60Co-γ irradiation on the sterilization effect and main components of Rubus chingii Hu. METHODS Irradiated Rubus chingii Hu by 0, 6, 10, 15, 30 kGy doses of 60Co-γ, used the microbial count method to determine the microbial level of Rubus chingii Hu before and after irradiation. Analyzed the components of Rubus chingii Hu by high resolution mass spectrometry, investigated the effects of irradiation on the quality of Rubus chingii Hu by comparing the components of Rubus chingii Hu samples before and after irradiation, analyzing the quantitative results of ellagic acid and kaempferol 3-O-yunxiangoside, and evaluating the similarity of fingerprints. RESULTS The results of microbial examination of Rubus chingii Hu after different doses of irradiation all met the requirements, cluster analysis and principal component analysis of 20 components showed no significant difference. And there was no significant difference in the contents of ellagic acid and kaempferol 3-O-glucoside before and after irradiation. The similarity of fingerprints before and after irradiation was between 0.995 and 1.000. CONCLUSION Irradiation can effectively control the microbial level in Rubus chingii Hu, and there is no significant effect on the chemical composition of Rubus chingii Hu, the results provide a basis for the application of irradiation in the sterilization process of Rubus chingii Hu.

OBJECTIVE To investigate the current situation of clinical trial institutions in Chongqing after the recording system of clinical trial institutions, and to put forward suggestions. METHODS A total of 34 clinical trial institutions in Chongqing were selected as the research objects. The research contents mainly included the basic situation of the institutions, staffing, hardware and software construction, project operation and work difficulties, etc. Combined with the research results, suggestions were put forward for the difficulties of the new and old institutions in the operation of clinical trial institutions. RESULTS A total of 29 questionnaires were collected and 29 were valid. The release of clinical trial resources in Chongqing were not sufficient and uniform, there were problems such as insufficient incentive policies, lack of information platform construction, and the number and professional degrees of practitioners need to be improved. The new institutions had certain advantages in project load, office space and willingness to undertake, but it was restricted by principle investigator qualification, project experience and institutional reputation. CONCLUSION It is suggested to clarify the incentive mechanism, enhance the enthusiasm of clinical trials and establish a standardized training mechanism for clinical trial professionals. Make full use of the information platform to improve the efficiency of clinical trials, build a regional information platform to share information and resources, and accelerate the development of regional clinical trials.

OBJECTIVE To establish a ultra-high-performance liquid chromatography-mass spectrum/mass spectrum(UPLC-MS/MS) method for the determination of anlotinib in human plasma and assessment of clinical application. METHODS Zanubrutinib was used as internal standard and the extraction process was performed through protein precipitation method using acetonitrile, followed by separation on an Ultimate XB-C18(100 mm×2.1 mm, 3.0 μm) column using acetonitrile and 10 mmol·L−1 ammonium acetate-0.1% formic acid step-elution gradient. The flow rate was 0.6 mL·min−1 and injection volume was 5 μL. The mass analysis was performed by positive ion electrospray ionization in multiple-reaction monitoring mode, and the mass spectrometer was set at m/z 408.1→339.1 for anlotinib and m/z 472.2→290.1 for internal standard, respectively. The specificity, standard curve and lower limit of quantification, precision and recovery, matrix effect and stability of the method and clinical application were investigated. RESULTS The method was validated over the concentration range of 1.0−100.0 ng·mL−1, with R2=0.998 4. The precision RSD was<9%, the recovery and matrix effect were 104.81%−107.32% and 102.54%−105.26%, respectively, and this method had good stability and was not affected by matrix effect. The method had been used for determined 52 advanced non-small cell lung cancer patients treated with anlotinib. The trough plasma concentration (Ctrough) was measured on day 43 after initiation of anlotinib treatment. Anlotinib Ctrough were higher than lower limit of quantitation (1.0 ng·mL−1) from 52 patients. The plasma concentration of anlotinib Ctrough was (11.38±4.29)ng·mL−1 with 37.66% coefficients of variation, which were shown large inter-patient variability. CONCLUSION This method is high sensitivity, specificity and accurate, and suitable for determination of anlotinib in human plasma.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.

Objective:To clarify the effect of the reform of Sichuan medical association on the coordinated development of medical re-sources supply and regional economy,and provide a basis for continuing to promote the coordinated development.Methods:Based on the panel data of 18 prefecture-level cities and 3 autonomous prefectures in Sichuan Province from 2009 to 2021,the medical resources invest-ment and economic development level of each city(state)in Sichuan Province were calculated by entropy weight method.Through the cou-pled coordination model,the degree of coordinated development was measured.The discontinuous time series model is used to measure the impact of the implementation of the medical association policy on the degree of coordinated development.Results:From 2009 to 2021,the supply of medical resources in Sichuan Province showed an overall upward trend,but the characteristics of the first concentration were ob-vious.In 2021,the coupling degree between medical resources investment and economic development in Sichuan Province is high(0.808),but the coupling coordination degree was still in a barely coordinated stage(0.540).The implementation of the reform of medical associa-tion effectively promoted the coordinated development of medical resource supply and regional economy.Conclusion:Local governments need to further strengthen the building of medical associations.By making long-term medical resources planning and exploring the role of digital technology in the medical field,it will further promote the expansion and balanced distribution of high-quality medical resources.